linux-kernel - Re: [omega-g1:10937] Re: [PATCH] net: configurable sysctl parameter "net.core.tcp_lowat" for sk_stream_min

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Message-id: <4E4E2CCD.6050809@ctc-g.co.jp>
Date:	Fri, 19 Aug 2011 18:28:45 +0900
From:	"Jun.Kondo" <jun.kondo@...-g.co.jp>
To:	David Miller <davem@...emloft.net>
Cc:	linux-kernel@...r.kernel.org, omega-g1@...-g.co.jp,
	notsuki@...hat.com, motokazu.kozaki@...com, htaira@...hat.com,
	netdev@...r.kernel.org, tomohiko.takahashi@...-g.co.jp,
	kotaro.sakai@...-g.co.jp, ken.sugawara@...-g.co.jp
Subject: Re: [omega-g1:10937] Re: [PATCH] net: configurable sysctl parameter
 "net.core.tcp_lowat" for sk_stream_min_wspace()

You suggested to use non-blocking writes, but we think
we have to rewrite the Apache code if doing so.
That is, we have to make a modification to Apache that
depends on the architecture.
By using this patch, it can be handled by changing the
configuration a little bit on the kernel side for such
applications that it is difficult to do so on application
side.



(2011/08/15 14:47), David Miller wrote:
> From: "Jun.Kondo"<jun.kondo@...-g.co.jp>
> Date: Mon, 15 Aug 2011 14:38:11 +0900
>
>> 2. to limit the block time of the write in order to
>> prevent the timeout of upper layer applications
>> even when the connection has low throughput, such
>> as low rate streaming
> Use non-blocking writes if you want this behavior.
>


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